Question

An advertisement for a health supplement for dogs claims to build lean muscle and strengthen tendons and ligaments, as well as provide energy. Which two macromolecules must the supplement contain to provide these benefits?

a. Carbohydrates and lipids
b. Proteins and carbohydrates
c. Nucleic acids and carbohydrates
d. Lipids and nucleic acids

Answer 1

B-proteins and carbohydrates

The supplement has to build lean muscle and strengthen tendons and ligaments. Muscle, tendons, and ligaments are all made of protein. So, the supplement must contain protein.

Step-by-step explanation:

Answer 2

B-proteins and carbohydrates

The supplement has to build lean muscle and strengthen tendons and ligaments. Muscle, tendons, and ligaments are all made of protein. So the supplement must contain protein.
It should also provide energy. The most readily used form of energy is carbohydrates (for energy metabolism, carbs are used first, then lipids, then proteins as a last resort). Therefore, the supplement should have carbohydrates.